Dell Inspiron PD598 Owner's Manual page 138

Memory
Memory module connector
Memory module capacities
Memory type
Minimum memory
Maximum memory
NOTE:
In order to take advantage of the dual channel bandwidth capability, both
memory slots must be populated and must match in size.
NOTE:
The available memory displayed does not reflect the complete maximum
memory installed because some memory is reserved for system files.
5-in-1 media memory card reader
5-in-1 media memory card controller Ricoh R5C832
5-in-1 media memory card connector 5-in-1 combo card connector
Cards supported
Ports and Connectors
Audio
IEEE 1394a
Modem
Network adapter
S-video TV-out
USB
Video
DVI-D (Digital Video Interface)
138
Specifications
two user-accessible SODIMM connectors
256 MB, 512 MB, 1 GB, and 2 GB
1.8 V SODIMM DDR-II
supports DDR-II up to 667 MHz
256 MB
4 GB
MS
MS Pro
SD/SDIO
MMC
xD
CD Type I/II & IBM Microdrive through
ExpressCard adapter
microphone-in connector, stereo
headphones/speakers connector
4-pin mini, nonpowered connector
RJ-11 port
RJ-45 port
7-pin mini-DIN connector (optional S-video
to composite video adapter cable; optional
S-video to component video adapter cable)
six 4-pin USB 2.0-compliant connectors
15-pin connector
24-pin connector